RADIATION PHYSICS AND CHEMISTRY
·
2014
·
IF 1.189
Wanqin Jin,Liming Yang,Wei Yang,Bin Chen,Jie Chen
A novel method for grafting of 2-hydroxyethyl methacrylate (HEMA) onto the surface of stainless steel (SS) was explored by using 60 Co-γ irradiation. The surface of SS was modified by coating of dopamine before radiation grafting. The grafting reaction was performed in a simultaneous irradiation condition. The chemical structures change of the surface before and after grafting was demonstrated by Fourier transform infrared (FTIR) spectrometer. The hydrophilicity of the samples was determined by water contact angle measurement in the comparison of the stainless steel in the conditions of pristine, dopamine coated and HEMA grafted. Surface morphology of the samples was characterized by atomic force microscope (AFM) and scanning electron microscope (SEM). The corrosion resistance properties of the samples were evaluated by Tafel polarization curve. The hemocompatibility of the samples were tested by platelet adhesion assay.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Qi Yang,Dan Chen,Libing Chu,Jianlong Wang
In present work, we studied a novel Fe/C nanomaterial fabricated using Fe-based metal organic frameworks (MOFs) as precursors through thermal pyrolysis to catalyze gamma irradiation-induced degradation of antibiotics, cephalosporin C (CEP-C) and sulfamethazine (SMT) in aqueous solution. The MOFs-derived Fe/C nanomaterials (DMOFs) had the regular octahedrons structure of MOFs and contained element C, Fe and O, while Fe° with a fraction of Fe 3 O 4 and Fe 2 O 3 were identified. Results showed that DMOFs addition could accelerate the generation of OH during gamma irradiation, while the intermediates of bonds cleavages of antibiotic molecules and OH addition were identified. DMOFs were more effective to improve the decomposition of antibiotic having the higher adsorption capacity like SMT. The degradation rate of CEP-C and SMT increased by 1.3 times and 1.8 times, and TOC reduction at 1.0 kGy reached 42 % and 51 %, respectively by gamma/DMOFs treatment, while only 20.2 % (CEP-C) and 4.5 % (SMT) of TOC reduction were obtained by γ-irradiation alone. The crystal structure, functional groups and magnetism of DMOFs changed slightly after gamma irradiation, which made it possible to be reused. DMOFs were promising to enhance the degradation of antibiotics during gamma irradiation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
·
2023
·
IF 3.3
Ce Shi,Shijie Xiong,Shengxiang Li,Xinghai Shen
The multi-scale supramolecular assembly (MSSA)-based extraction strategy with hydroxyl-functionalized ionic liquid (IL) is promising in the separation of metal ions from radioactive environments for which a comprehensive understanding toward the radiation stability of the MSSA system is necessary. Herein, we report on the analyses of the radiation stability of MSSA in extraction, especially the adopted ILs 1-(2-hydroxyethyl)-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (IL-1) and 1-(2-hydroxyethyl)-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl) imide (IL-2), by UV–vis, 1H NMR, and ESI-HRMS. It was found that the macroscopic assembly (MA) sphere could not be formed after γ irradiation on the extraction system with IL-1. On the contrary, the trisubstituted IL-2 instead of the disubstituted IL-1 remarkably improved the radiation stability of the MSSA system to guarantee the formation of the MA sphere. The high extraction efficiency could be kept, and the mechanism of such an improvement was revealed.
研究领域:
化学
·
放射化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2018
·Vol. 316
·期 1
·209-219
·
IF 1.181
Chang Shuquan,Chang Ling,Han Wei,Li Zheng,Dai Yaodong,Zhang Haiqian
Novel Prussian blue/natural porous framework nanocomposites (PB@Apple, PB@Corn stalk and PB@Pomelo peel) were successfully produced in aqueous solution via an in situ γ radiation method. They have layered porous structure with 70–100 nm irregular PB, regular polygonous porous structure with 50–70 nm cubic PB and hierarchical porous structure with 10–20 nm spherical PB, respectively. They exhibit good Cs + adsorption properties and have maximal Cs + adsorption capacities of 67.3, 62.1 and 83.8 mg g −1 , which can be used to treat radioactive wastewater. This production method is simple, efficient and environmental-friendly.
研究领域:
环境科学
·
纳米技术
·
材料科学
·
辐射化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Chao Shen,Canran Li,Xianghui Li,Haijun Chen,Dongxun Zhang,Gang Deng,Peng Li,Haolong Wang,Chi Zhao
The urgent need to address severe threats to marine ecosystems from industrial oil pollution and spills drives the development of efficient and robust oil/water separation technologies. Inspired by the anti-fouling mechanisms of marine algae, this study presents a gamma (γ)-irradiation-driven layer-by-layer (LbL) self-assembly strategy to construct a polyvinyl alcohol (PVA)/sodium alginate (SA)/calcium carbonate (CaCO 3 ) multi-layered nanocomposite coating on nylon mesh substrates. Synergistic Ca 2+ crosslinking and γ-irradiation-induced interpenetrating networks confer exceptional mechanical stability (tensile strength: 96.1 MPa, elongation at break: 91.8%) with robust anti-swelling properties. The micro-nano hierarchical surface achieves underwater superoleophobicity (underwater oil contact angle >150°). The PVA/SA/CaCO 3 mesh demonstrates >99% separation efficiency and flux of 1492 L·m -2 ·h -1 for diverse oil/water mixtures under gravity, maintaining 98.6% efficiency after 40 cycles. Mechanical stability persists in extreme environments including anhydrous ethanol, strong alkali (pH = 14), and high-salinity solutions (5 mol/L NaCl). A stable hydration layer enables self-cleaning and anti-fouling behavior, with zero oil adhesion during dynamic impact tests. Critically, solvent-free γ-irradiation without toxic agents, ensuring green fabrication. This work provides an efficient, durable, and environmentally friendly solution for oil/water separation under complex conditions, demonstrating significant potential for marine ecological remediation and industrial wastewater treatment.
研究领域:
环境工程
·
材料科学
·
化学工程
·
海洋生态学
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
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